A Wireless Lan Problem; Problems With The Keyboard And Other Pointing Devices; An Ultranav Pointing Device Problem - Lenovo ThinkPad X131e Chromebook User Manual

If you configured the adapter for full duplex, make sure that the switch port also is configured for
full duplex. Setting the wrong duplex mode can degrade performance, cause data loss, or result in
lost connections.
– You have installed all networking software that is necessary for your network environment.
Check with your LAN administrator for the necessary networking software.
• Problem: The adapter stops working for no apparent reason.
Solution: The network driver files might be corrupt or missing. Update the driver by referring to the above
solution for the procedure to make sure that the correct device driver is installed.
• Problem: If your computer is a Gigabit Ethernet model and you use a speed of 1000 Mbps, the
connection fails or errors occur.
Solution:
– Use Category 5 wiring and make sure that the network cable is securely connected.
– Connect to a 1000 BASE-T hub/switch (not 1000 BASE-X).
• Problem: If your computer is a Gigabit Ethernet model, it cannot connect to the network at 1000 Mbps.
Instead, it connects at 100 Mbps.
Solution:
– Try another cable.
– Ensure that the link partner is set to auto-negotiate.
– Ensure that the switch is 802.3ab-compliant (gigabit over copper).

A wireless LAN problem

Problem: You cannot connect to the network using the built-in wireless network card.
Solution: Ensure that:
• The wireless radio is enabled.
• Your wireless LAN driver is the latest version.
• your computer is within range of a wireless access point.

Problems with the keyboard and other pointing devices

The following are the most common problems with keyboards and other pointing devices.

An UltraNav pointing device problem

• Problem: The pointer drifts when the computer is turned on or after it resumes normal operation.
Solution: The pointer might drift when you are not using the TrackPoint pointing device during normal
operation. This is a normal characteristic of the TrackPoint pointing device and is not a defect. Pointer
drifting might occur for several seconds under the following conditions:
– When the computer is turned on
– When the computer resumes normal operation
– When the TrackPoint pointing device is kept pressed for a long time
– When the temperature changes
.
Chapter 5 Troubleshooting computer problems
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